TSOP341..KU1
Vishay Semiconductors
IR Receiver Modules for Remote Control Systems
Description
The TSOP341..KU1 - series are miniaturized receiv-
ers for infrared remote control systems. PIN diode
and preamplifier are assembled on lead frame, the
epoxy package is designed as IR filter.
The demodulated output signal can directly be
decoded by a microprocessor. The main benefit is the
operation with short burst transmission codes and
high data rates at a supply voltage of 3 V.
1
2 3
16645
Features
• Photo detector and preamplifier in one
package
• Internal filter for PCM frequency
e3
• Improved shielding against electrical
field disturbance
• TTL and CMOS compatibility
• Output active low
• Supply voltage range: 2.7 V to 5.5 V
• High immunity against ambient light
• Lead (Pb)-free component
• Component in accordance to RoHS 2002/95/EC
and WEEE 2002/96/EC
Mechanical Data
Pinning:
1 = OUT, 2 = GND, 3 = V
S
Parts Table
Part
TSOP34130KU1
TSOP34133KU1
TSOP34136KU1
TSOP34137KU1
TSOP34138KU1
TSOP34140KU1
TSOP34156KU1
Carrier Frequency
30 kHz
33 kHz
36 kHz
36.7 kHz
38 kHz
40 kHz
56 kHz
Special Features
• Enhanced data rate up to 4000 bit/s
• Operation with short short bursts possible
(≥ 6 cycles/burst)
Block Diagram
16833
Application Circuit
17170
3
30 kΩ
V
S
1
Input
AGC
Band
Pass
Demo-
dulator
OUT
2
PIN
Control Circuit
GND
Circuit
Transmitter
TSOPxxxx
with
TSALxxxx
R
1
= 100
Ω
V
S
OUT
GND
V
O
C
1
=
4.7 µF
+
V
S
µC
GND
R
1
and C
1
recommended to suppress power supply
disturbances. The output
voltage
should not
be
hold continuously at a
voltage below V
O
= 2.0
V
by
the external circuit.
Document Number 81457
Rev. 1.0, 07-Sep-06
www.vishay.com
1
TSOP341..KU1
Vishay Semiconductors
Absolute Maximum Ratings
T
amb
= 25 °C, unless otherwise specified
Parameter
Supply Voltage
Supply Current
Output Voltage
Output Current
Junction Temperature
Storage Temperature Range
Operating Temperature Range
Power Consumption
Soldering Temperature
(T
amb
≤
85 °C)
t
≤
10 s, 1 mm from case
(Pin 3)
(Pin 3)
(Pin 1)
(Pin 1)
Test condition
Symbol
V
S
I
S
V
O
I
O
T
j
T
stg
T
amb
P
tot
T
sd
Value
- 0.3 to + 6.0
3
- 0.3 to
(V
S
+ 0.3)
10
100
- 25 to + 85
- 25 to + 85
30
260
Unit
V
mA
V
mA
°C
°C
°C
mW
°C
Electrical and Optical Characteristics
T
amb
= 25 °C, unless otherwise specified
Parameter
Supply Current (Pin 3)
Supply Voltage
E
v
= 0
E
v
= 40 klx, sunlight
T
amb
= - 25 °C to + 85 °C
T
amb
= 0 °C to + 60 °C,
E
v
< 30 klx, sunlight
Transmission Distance
E
v
= 0, test signal see fig. 1,
IR diode TSAL6200,
I
F
= 250 mA
I
OSL
= 0.5 mA, E
e
= 0.7 mW/m
2
,
test signal see fig. 1
V
S
= 3 V
Pulse width tolerance:
t
pi
- 5/f
o
< t
po
< t
pi
+ 6/f
o
,
test signal see fig. 3
V
S
= 3 V
Pulse width tolerance:
t
pi
- 5/f
o
< t
po
< t
pi
+ 6/f
o
,
test signal see fig. 3
V
S
= 5 V
Pulse width tolerance:
t
pi
- 5/f
o
< t
po
< t
pi
+ 6/f
o
,
test signal see fig. 3
V
S
= 5 V
Pulse width tolerance:
t
pi
- 5/f
o
< t
po
< t
pi
+ 6/f
o
,
test signal see fig. 3
t
pi
- 5/f
o
< t
po
< t
pi
+ 6/f
o
,
test signal see fig. 3
Angle of half transmission
distance
Test condition
Symbol
I
SD
I
SH
V
S
V
S
2.7
2.4
Min
0.7
Typ.
1.2
1.3
5.5
5.5
Max
1.5
Unit
mA
mA
V
V
d
35
m
Output Voltage Low (Pin 1)
Minimum Irradiance (30 - 40
kHz)
V
OSL
250
mV
E
e min
0.2
0.4
mW/m
2
Minimum Irradiance (56 kHz)
E
e min
0.3
0.5
mW/m
2
Minimum Irradiance (30 - 40
kHz)
E
e min
0.35
0.5
mW/m
2
Minimum Irradiance (56 kHz)
E
e min
0.45
0.6
mW/m
2
Maximum Irradiance
Directivity
E
e max
ϕ
1/2
30
± 45
W/m
2
deg
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2
Document Number 81457
Rev. 1.0, 07-Sep-06
TSOP341..KU1
Vishay Semiconductors
Typical Characteristics
T
amb
= 25 °C, unless otherwise specified
Optical Test Signal
(IR diode TSAL6200, I
F
= 0.4 A,
N
= 6 pulses,
f = f
0
, T = 10 ms)
E
e
1.0
T
on
,T
off
- Output Pulse
Width
(ms)
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0.1
1.0
= 950 nm,
optical test signal, fig. 3
Toff
Ton
t
pi
*)
T
6/fo is recommended for optimal function
t
*) t
pi
Output Signal
V
O
V
OH
V
OL
t
d1 )
1)
2)
14337
3/f
0
< t
d
< 9/f
0
t
pi
- 4/f
0
< t
po
< t
pi
+ 6/f
0
t
t
po2 )
10.0
100.0 1000.0 10000.0
16910
E
e
- Irradiance (mW/m
2
)
Figure 1. Output Function
Figure 4. Output Pulse Diagram
0.35
E
e min
/E
e
- Rel. Responsivity
t
po
- Output Pulse
Width
(ms)
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.7
16926
0.30
Output Pulse
0.25
0.20
0.15
0.10
0.05
0.00
0.1
= 950 nm,
optical test signal, fig.1
Input Burst Duration
f = f
0
± 5 %
f (3 dB) = f
0
/7
0.9
1.1
f/f
0
- Relative Frequency
1.3
1.0
10.0
100.0 1000.0 10000.0
16907
E
e
- Irradiance (mW/m²)
Figure 2. Pulse Length and Sensitivity in Dark Ambient
Figure 5. Frequency Dependence of Responsivity
E
e
Optical Test Signal
4.0
E
e min
- Threshold Irradiance (mW/m
2
)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.01
Ambient, = 950 nm
Correlation
with
ambient light sources:
10
W/m
2
1.4 klx (Std.illum.A, T= 2855 K)
10
W/m
2
8.2
klx (Daylight, T = 5900 K)
600 µs
T = 60 ms
Output Signal,
(see fig. 4)
600 µs
t
94
8134
V
O
V
OH
V
OL
T
on
T
off
t
16911
0.10
1.00
10.00
100.00
E - Ambient DC Irradiance (W/m
2
)
Figure 3. Output Function
Figure 6. Sensitivity in Bright Ambient
Document Number 81457
Rev. 1.0, 07-Sep-06
www.vishay.com
3
TSOP341..KU1
Vishay Semiconductors
E
e min
- Threshold Irradiance (mW/m²)
E
e min
- Threshold Irradiance (mW/m²)
2.0
f = f
o
f = 10 kHz
1.0
0.6
0.5
0.4
0.3
0.2
0.1
0.0
- 30 - 15
Sensitivity in dark ambient
1.5
f = 1 kHz
0.5
f = 100 Hz
0.0
0.1
1.0
10.0
100.0
1000.0
0
15
30
45
60
75
90
16912
V
sRMS
- AC
Voltage
on DC Supply
Voltage
(mV)
16918
T
amb
- Ambient Temperature (°C)
Figure 7. Sensitivity vs. Supply Voltage Disturbances
Figure 10. Sensitivity vs. Ambient Temperature
1.2
E
e min
- Threshold Irradiance (mW/m²)
2.0
f(E) = f
0
1.6
1.2
0.8
0.4
0.0
0.0
0.4
0.8
1.2
1.6
2.0
E - Field Strength of Disturbance (kV/m)
S (
λ
)
rel
- Relative Spectral Sensitivity
1.0
0.8
0.6
0.4
0.2
0.0
750
850
950
1050
1150
94
8147
16919
λ
-
Wavelength
(nm)
Figure 8. Sensitivity vs. Electric Field Disturbances
Figure 11. Relative Spectral Sensitivity vs. Wavelength
1.0
0.9
Max. Envelope Duty Cycle
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
16914
0°
10°
20°
30°
40°
1.0
0.9
0.8
f = 38 kHz, E
e
= 2 mW/m
2
0.7
50°
60°
70°
80°
20
40
60
80
100 120
Burst Length (number of cycles/burst)
0.6
96 12223p2
0.4 0.2
0
0.2
0.4 0.6
d
rel
- Relative Transmission Distance
Figure 9. Max. Envelope Duty Cycle vs. Burstlength
Figure 12. Directivity
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4
Document Number 81457
Rev. 1.0, 07-Sep-06
TSOP341..KU1
Vishay Semiconductors
• Continuous signal at 38 kHz or at any other
frequency
• Signals from fluorescent lamps with electronic
ballast (an example of the signal modulation is in the
figure below).
1.0
0.9
E
e min
- Sensitivity (mW/m
2
)
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
V
S
- Supply
Voltage
(V)
17185
Figure 13. Sensitivity vs. Supply Voltage
IR Signal
IR Signal from fluorescent
lamp
with
low modulation
Suitable Data Format
The circuit of the TSOP341..KU1 is designed in that
way that unexpected output pulses due to noise or
disturbance signals are avoided. A bandpass filter, an
integrator stage and an automatic gain control are
used to suppress such disturbances.
The distinguishing mark between data signal and dis-
turbance signal are carrier frequency, burst length
and duty cycle.
The data signal should fulfill the following conditions:
• Carrier frequency should be close to center fre-
quency of the bandpass (e.g. 38 kHz).
• Burst length should be 6 cycles/burst or longer.
• After each burst which is between 6 cycles and
70 cycles a gap time of at least 10 cycles is neces-
sary.
• For each burst which is longer than 1.8 ms a corre-
sponding gap time is necessary at some time in the
data stream. This gap time should have at least same
length as the burst.
• Up to 2200 short bursts per second can be received
continuously.
Some examples for suitable data format are: NEC
Code, Toshiba Micom Format, Sharp Code, RC5
Code, RC6 Code, RCMM Code, R-2000 Code,
RECS-80 Code.
When a disturbance signal is applied to the
TSOP341..KU1 it can still receive the data signal.
However the sensitivity is reduced to that level that no
unexpected pulses will occur.
Some examples for such disturbance signals which
are suppressed by the TSOP341..KU1 are:
• DC light (e.g. from tungsten bulb or sunlight)
16920
0
5
10
Time (ms)
15
20
Figure 14. IR Signal from Fluorescent Lamp with low Modulation
Document Number 81457
Rev. 1.0, 07-Sep-06
www.vishay.com
5
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